A horizontal multijoint type robot is so constructed that it comprises a
first arm connected through a first joint shaft to a base, a second arm
connected through a second joint shaft to the first arm, and a working
shaft provided rotatably and movably up and down on the distal end of the
second arm, and that the arm length L1 of the first arm and the arm
length L2 of the second arm are equal to each other so that the second
arm is able to overlap the first arm.
